The Collaborative International Dictionary
Rivality \Ri*val"i*ty\, n. [L. rivalitas: cf. F. rivalit['e].]
Rivalry; competition. [Obs.]
Equality, as of right or rank. [Obs.]
--hak.
Wiktionary
n. 1 (context obsolete English) rivalry; competition 2 (context obsolete English) equality, as of right or rank
Wikipedia
Rivality is a massively multiplayer online browser-based strategy game developed by the Swedish gaming company FunRock. It is available in nine different languages, including Swedish, Norwegian, English, Dutch, Danish, Finnish, Spanish, German and Bengali.
It is programmed in ASP and runs in most modern browsers (such as Google Chrome, Firefox and Internet Explorer). Rivality can also be played on many newer smart-phones, but does not provide a separate mobile version. There is, however a mobile app for Android available on Market, which allows the players to sell their oil, see base money and information etc.